JIRA Enhancer Plugin keeps you informed about all issue status changes, SLA values and gives valuable KPI metrics for QA reports as well as reports, tab fields, and workflow utilities
All issue state history at a glance. This is the stateoscope plugin for Atlassian JIRA that comes with an issue tab panel showing vivid and clarified issue history.
Time to SLA Plugin for JIRA simply manages your SLAs per transitions. After defining SLAs per transition and priority, a countdown to SLA and overdue (if exists) will be seen.
Twitter Plugin for JIRA allows your company to follow JIRA projects via Twitter.